TW576896B - Scroll compressor - Google Patents

Abstract

A scroll compressor has a shell within which is positioned a frame. The frame is supported by a base portion of the shell to prevent axial movement of the frame with respect to the shell. A motor stator, a main bearing housing and a lower bearing housing are each positioned within the shell by engagement with the frame. A drive member which includes a motor rotor is rotatably supported by both the main bearing housing and the lower bearing housing. The frame, by positioning the motor stator, the main bearing housing and the lower bearing housing, allows the ""air gap"" between the motor stator and the motor rotor to be accurately controlled.

Description

5768%

V. Description of the Invention (υ) The present invention relates to scroll machines. In particular, the present invention relates to the positioning and support finger system of the main support casing and the secondary support casing of a scroll compressor. There is a type of machine, generally called a turbine, which can be used to discharge various types of fluids. The turbine can be configured as an amplifier, a partial exhaust engine, a partial pump, a compressor, etc., and the features of the present invention It is applicable to any of these machines. In any case, for the purpose of illustration, the specific embodiment disclosed is a type of a closed refrigeration scroll compressor. Scroll compressors are used in refrigeration and air conditioning machines. Compressors have become more and more popular due to their ability to operate very efficiently. Generally, these machines combine a pair of feeding packets, one of which rotates around the other, and Defining one or more mobile rooms' packs The size of these mobile rooms gradually decreases from the external suction port to the central discharge port. An electric motor is provided and is operable The orbiting turbine member is driven via a suitable drive shaft attached to a motor rotor. In a hermetic compressor, the bottom of the hermetic shell typically contains an oil sump for lubrication and cooling purposes. Electric motors typically include a motor A stator, the motor stator is crimped into the casing of the compressor. A shaft drive is typically crimped to the motor rotor, and is rotatably fixed by a main support housing and a lower support housing. Each The supporting casing is also fixed to the compressor casing. The paper size of this motor is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (Please read the note on the back? Matters before filling out this page) 1Γ-- ------- Printed by the Consumer Property Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 576896 ΚΙ Β7 V. Description of the invention (2) The sub-position is in the center hole of the motor stator, and the motor stator has a specific gap. Between the motor stator and the motor rotor. The tolerance used for this gap is a function of the stator tolerance, the two bearing housing tolerances, the shaft drive tolerance, and the motor rotor tolerance. Therefore The final size of the gap between the motor rotor and the motor stator will be larger than the most suitable gap desired by the compressor designer. The present invention provides the technology of positioning and support systems, which significantly reduces the media Variation in the gap between the motor rotor and the motor stator. Tighter control of this gap will increase the operating efficiency of the electric motor. The positioning and support system includes a support housing positioning frame that is pressed within the housing Hehe is supported by the base of the shell. The motor stator is crimped in the frame and the two support cases are screwed to the frame. Therefore, the frame is interposed between the motor stator by correct mechanical fixing. The positional relationship with the motor rotor can be correctly controlled, and therefore the gap or the gap between the two components can be tightly controlled. The tight control of the gap can cause The operation efficiency of the electric motor is improved. In addition, the combined use of the support housing, stator, motor and crankshaft bracket will simplify the assembly of the scroll compressor. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. For those skilled in the art, other advantages and purposes of the present invention will be described in detail in the following sections. Formula 1 is briefly sharp. In the drawings, the presently best mode intended to implement the present invention is illustrated. Figure 1 is a seal that combines the special positioning and support system of the present invention. The paper size is applicable to the Chinese National Standard (CNS) i {I ^^ 1〇 χ 297 public meals 576896 printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economy

For a detailed description of the preferred embodiment, reference is now made to the drawings, in which the same or corresponding parts are marked with the same element numbers in several drawings, and a special positioning according to the present invention is shown in Figures 1-4 And support system scroll compressors, which are generally designated by component number 10. The scroll compressor includes a substantially cylindrical closed shell 12 with a lid 14 welded at the upper end and a base 16 welded at the lower end. The base has several device feet (not shown) Integrated with it. The cover 14 is provided with a cold coal discharge fitting 18, which may have a common discharge valve. A laterally extending partition plate 20 is attached to the casing 12 by welding around the casing 12 at the same position as the cover 14 is welded to the casing 12. A compressor loading frame 22 is pressed into the casing 12 and is supported by the end of the base 16. As shown in FIG. 1, 'the base 16 is smaller in diameter than the case 12' so that the base 16 is housed in the case 12 and welded around it. The main components of the compressor 10 attached to the loading frame 22 include a two-piece main support case 24, a lower support case 26, and a motor stator 28. One has an eccentric crank pin 32 on the upper end of the drive shaft or crankshaft 30. This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) -------- ^ ------ --- $ φ (Please read the notes on the back before filling this page) / ⑽96 A7 B7

Printed by the Consumers' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs is rotatably pivoted to a support member 34 fixed in the main support case 24 and a second support member ㈤ fixed in the lower support case 26. The lower end of the crankshaft 30 has a larger diameter concentric hole 38, which communicates with a smaller diameter hole 40 positioned radially outward and extending upward to the top of the crankshaft 30. An oil reservoir 44 is defined in the lower portion of the casing 12 and is filled with lubricating oil to a level slightly higher than the lower end of the rotor 46, and the hole 38 serves as a pump to pump the lubricating oil to the crankshaft 30 and into the hole 40 and Finally, all the various components that require lubricant in compressor 10. The crankshaft 30 is rotatably driven by an electric motor, which includes a stator 28, a winding 48 passing through the stator, and a rotor 46 pressed to the crankshaft 30. An upper weight 50 is fixed to the crankshaft 30, and a lower weight is fixed to the rotor 46. The upper surface of the two-piece main bearing housing 24 is provided with a flat propulsion bearing surface 54 on which a turbine member orbiting a common scroll blade or a wrap 58 extending upward from the end of a flat plate 60 is placed. ". Protruded downward by the turbine member 56 of the lower surface of the end plate 60 is a cylindrical hub 62 having a main bearing 64 and a drive having an inner hole rotatably placed therein. A support bush 66 in which an eccentric crank pin is drivenly disposed. The eccentric crank pin 32 has a plane on one surface that drivingly engages a plane formed in a portion of an inner hole of the drive support bush 66 to provide a diameter The ground-oriented drive configuration is as shown in US Pat. No. 4,877,382, the assignee of the present application, the disclosure of which is incorporated herein by reference. An Odham coupling 68 is also provided while positioned around the turbine member 56 and the two-piece support housing

This paper size applies to China National Standard (CNS) A4 specifications (210 x 297 mm -------- ^ --------- line Φ (Please read the precautions on the back before filling this page) ) 576896

The orbiting turbine member 70 is also provided with a wrapper 72 extending downwardly from the end plate 74, which is positioned to engage the wrapper 58 of the orbiting turbine member 56. The non-orbiting turbine component 70 has a centrally located exhaust passage 76 communicating with an upwardly-opening recess 78 in fluid communication with a discharge silencing chamber 80 which is covered by a cover 14 And the branch extends to define the partition 20. An annular groove recess 82 is also formed in the non-orbiting turbine member 70, in which a floating closure assembly 84 is placed. The recesses 78 and 82 and the floating closed assembly 84 cooperatively define a plurality of axial pressure biasing chambers, which receive the compressed fluid compressed by the wraps 58 and 72, so as to be applied on the non-clothing orbiting turbine member 70. An axial bias causes the tips of the individual wraps 58 and 72 to be in closed engagement with the opposite end planes of the opposite end planes 74 and 60, respectively. Floating closed assembly 84 is the preferred type in the detailed description of the assignee's U.S. Patent No. 5,156,539, the disclosure of which is incorporated herein by reference. The non-orbiting turbine component 70 is designed to be configured to restrict axial movement to the two-piece main support housing 24 in an appropriate manner, such as in the aforementioned U.S. Patent No. 4,877,382 or the U.S. assignee For those mentioned in Patent No. 5, 丨 02, 316, the disclosed part is incorporated herein by reference. The present invention is directed to the special positioning and support system illustrated in the drawings, which includes a base 16, a loading frame 22, a main support housing 24, and a lower support paper. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (2ΐθ χ Issued by 297) -------- ^ --------- (Please read the notes on the back before filling out this page) Printed by the Employees' Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 7〇896 A7 B7 V. Description of the invention (6) (Please read the precautions on the back before filling this page). In a typical conventional compressor, the main support housing, the motor stator and the lower support housing are all fixed in a compressor housing. In order to effectively operate the motor, the gap or "gap" between the motor rotor and the motor stator must be tightly controlled. When the components used for all the devices of the motor rotor and the motor stator are installed in the casing of the compressor It is necessary to rely on the accuracy of the shell to tightly control the gap. The loading rack 22 provides another option, which is to rely on the precision of the shell 12 to control the "gap". In the present invention, the loading frame 22 is fixed to the case 12 and the motor stator 28, and the main support case 24 and the lower support case 26 are fixed to the loading frame 22. Therefore, the machining of the loading frame 22 will control the gap between the motor stator 28 and the motor rotor 26. Since the machining of the loading frame 22 can be controlled more significantly than the dimensional tolerance of 12, the combination of the loading frame 2 2 will reduce the tolerances related to “gap,” and therefore increase the efficiency of the electric motor. Intellectual Property of the Ministry of Economic Affairs The bureau's consumer cooperative printed loading rack 22 is pressed into a position inside the shell 12 that abuts or is slightly separated from the base 16. The base 16 can be fixed to the loading rack 22 before or after The only consideration is that the assembly of the lower support housing 26, the motor stator 28 and the main support housing 24 are pressed into the housing 12 before or after the loading frame 22. The abutment of the loading frame 22 to the base 16 It is provided for the axial support of the loading frame 22 in the casing 12. When the loading frame 22 is placed at a slight gap from the base 16, any axial movement of the loading frame 22 may be caused by the reverse movement of the scroll compressor 10 The operation will cause the loading frame 22 to abut the base 16 to limit the amount of axial flow. The lower support housing 26 is fixed to the loading frame 22 with a plurality of bolts 90, which are held in place by screws. Spiral paper size in loading rack 22 applies China National Standard (CNS) A4 specification (210 X 297 mm) 576896

Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs

-------- tr ----- (Please read the precautions on the back before filling this page) This paper size applies to China National Standard (CNS) A4 (210 X 297 public love) within the pit 92 . The stator 28 is pressed into a central hole 94 defined by the loading frame 22. The main support housing 24 is fixed to the loading frame 22 with a plurality of bolts 96, which are screwed into the screw holes 98 in the loading frame 22. The motor rotor 46 is crimped to the crankshaft 30 and is rotatably supported by one end of a support 34 in the two-piece main support housing 24 and the other end of the support 36 in the lower support housing 26. Inside the center hole of the motor stator. Because all three positioning components, the stator 28, the main support housing 24 and the lower support housing 26 are controlled by the machined features of the loading frame 22 to control their positions, they are maintained in the threaded hole 92, the center hole The tightness of 94 and the threaded hole 98 with each other, the correctness of the gap can be tightly controlled. In addition, the loading frame 22 is provided with a first guide surface or positioning inner surface or diameter 100, and the lower support housing 26 is provided with a guide face or positioning outer surface or diameter 102. The loading frame 22 is also provided with a second guide surface or positioning inner surface or diameter 104, and the main support housing 24 is provided with a guide surface or positioning outer surface or diameter 106. Therefore, by controlling the position or concentricity between the central hole 94, the inner surface or diameter 100 and the inner surface or diameter 104, and with the control interposed between the outer surface or diameter 102 and the position and acceptance in the lower support housing 26, The position or concentricity of the holes of the support member 3 6 and the position or concentricity of the holes located between the outer surface or the diameter 10 6 and the two-piece support housing 24 and receiving the support member 3 4 are in the motor Correct positioning of the motor rotor 46 in the stator 28 can be accomplished. The correct position of the motor rotor 46 in the motor stator 28 allows the "gap" between these two components to be properly controlled. The use of the surface or diameter 10 0 -10 6 excludes the tight tolerances of the threaded holes 9 2 and 9 8 because the bolts -10- Α7 Β7 V. Description of the invention (8) 〇 %% /, it is used to support the housing 24 And 26 are fixed to the loading rack 22, and their diameters 100-106 determine their position. The use of a surface or diameter of 100 to 106 to determine the position of the motor rotor 46 relative to the motor stator 28 is a preferred embodiment of the present invention. The loading frame 22 is pressed into the casing 12 and should therefore be able to resist rotation in the casing 12. A method to make sure that there is no rotation of the loading frame 22 in the casing 12 'the loading frame 22 is provided with a plurality of fins 120 (the virtual image shown in FIG. 4)' Groove 122 (virtual image shown in Figure 3). Because the base 16 is welded to the shell 12, the coupling between the fins 120 and the grooves 122 will be more resistant to any rotation of the loading frame 22. The above detailed description describes the preferred embodiments of the present invention. It should be understood that the present invention allows modifications, changes, and alterations without departing from the scope and substantial meaning of the underlying claim. -------- 1T ---------- (Please read the notes on the back before filling this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs -11- This paper size applies to China National Standard (CNS) A4 specification (210 X 297 mm) 576896 A7 B7 V. Description of invention Shaped hub 12 shell 64 main bearing 14 cover 66 drive support bushing 16 base 68 ondan coupling 18 cold coal discharge fitting 70 turbine components not orbiting 20 transversely extending bulkhead 72 lamination 22 loading frame 74 end plate 24 main support Housing 76 Discharge passage 26 Lower support housing 78 Recess 28 Motor stator 80 Discharge muffler 30 Crankshaft 82 Ring groove recess 32 Eccentric crank pin 84 Floating closure assembly 34 Support 90 Bolt 36 Second support 92 Threaded hole 38 hole 94 Center hole 40 孑 L 96 Bolt 44 Oil reservoir 98 Thread sub-L 46 Rotor 100 Diameter 48 Winding 102 Diameter 50 Upper code 104 diameter 52 Lower code 106 diameter 56 > 咼Component 120 Wing 58 Wrapping 122 122 Groove 60 Flat (Please read the precautions on the back before filling this page) IT * --------- This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) -12-

Claims (1)

576896 VI. Scope of patent application 1. A scroll type calendar shrinking machine, which includes a casing;-a first scroll-type component located in the casing, the first scroll-type component has a first- A first spiral wrap that projects outward from the end plate; a second scroll-type member located in the shell; the second full-scroll structure has a second scroll that projects outward from the first end plate The wrapper, the second scroll wrapper sandwiches the first scroll wrapper, and when the second scroll-type member rotates relative to the first scroll-type member, a plurality of moving chambers are defined therebetween. A load frame located and fixed in the shell; a motor stator fixed to the frame, the motor stator defining a central hole; a main support housing separated by the load frame and centered on the load frame;- A lower support housing that is separate from and fixed to the loading rack; a drive member that is rotatably dropped by the main support housing and the lower support housing, the drive member causing the first The two scroll-type member is opposite to the first scroll A rotating member; and a motor rotor fixed to the driving member, the motor rotor being placed in a center hole of the motor stator. 2 · If the scope of patent application is the first! The item's thirsty roll-type shrinking machine, wherein the main support shell defines an i-th guide support surface and the carrier carrier defines a + Guan Chunzheng (CNS) A4 regulation 576896 Employee Consumer Cooperatives, Intellectual Property Bureau, Ministry of Economic Affairs Printed C8 ---------- D8_______, Shen Jing patent scope of a second guide support surface, the first guide support surface engages the second guide support surface, the support housing relative to the loading frame Position the main support housing. • As stated in the scroll compressor of item 2 of the patent, wherein an outer surface of the motor stator engages an inner surface of the loading frame, and the motor stator is positioned relative to the loading frame. 4. The scroll compressor according to item 2 of the patent application, wherein the casing includes a base which abuts the loading frame to prevent the loading frame from moving relative to the casing. 5. The scroll compressor according to item 2 of the patent application, wherein the main support housing is positioned with a support for supporting the driving member. 6. The scroll compressor according to item 2 of the patent application, wherein the lower support housing defines a third guide support surface and the loading frame defines a fourth guide support surface, and the third guide support surface engages the first guide support surface. Four guide support surfaces, the yoke support housing positions the lower support housing relative to the loading frame. 7. The scroll compressor according to item 2 of the application, wherein the first scroll member is disposed on the main support case, and the first scroll member can move relative to the main support case. . 8. The scroll compressor according to item 7 of the application, wherein the second scroll member engages the main support casing. 9. The scroll compressor according to item 2 of the patent application range, wherein six T of the second scroll member engages the main support casing. 10 · As for the scroll compressor of item 丨, the lower branch n I «ϋ I nn» ^ i I ϋ ϋ-ϋ n ϋ i ^ i ϋ n ϋ II n IIII ϋ II n ϋ nn ϋ I (Please read the notes on the back before filling this page) Printed by the Consumers' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A8 B8 C8 —---- D8_— — VI. Patent Application ^ ^ The bearing housing defines a first guide bearing surface and the loading frame defines a second guide bearing surface The first guide support surface is coupled to the second guide support surface, and the lower support case is positioned relative to the loading frame by the first support case. U • The scroll compressor according to item 10 of the patent application, wherein the shell includes a base which abuts the loading frame to prevent the loading frame from moving relative to the shell. I2. The scroll compressor according to item 丨 of the application, wherein the first scroll member is disposed on the main support housing, and the first scroll member can move relative to the main support housing. . 13. The scroll compressor according to item 12 of the application, wherein the second thirsty scroll member is coupled to the main supporting casing. 14. A scroll compressor comprising: a casing; a first scroll-type member located in the casing, the first scroll-type member having a first projecting outward from a first end plate Scroll wrap; a second scroll-type member located in the shell, the second scroll-type member having a second scroll wrap protruding outward from a second end plate, the second scroll The wrapper is sandwiched between the first scroll wrapper, and when the second scroll-type member rotates with respect to the first scroll-type member, a plurality of moving chambers are defined therebetween; A loading rack inside the shell; and a base fixed to the shell, the base abuts the loading rack to avoid -------- f --------- (Please read the back Note: Please fill out this page again) 15 576896 Scope of patent application The loading frame moves relative to the shell. 15. The scroll compressor according to item 14 of the application, wherein the mounting frame is pressed into the casing. 16. The scroll compressor according to item 5 of the patent application, wherein a part of the base is located in the casing. For example, the scroll compressor of item 14 of the patent application, wherein the loading frame includes at least one fin and the base includes at least one groove, and the fin engages the groove to resist the rotational movement of the loading frame. ! ί ----- 蠊 (Please read the notes on the back before filling out this page} Order · ----: II——Line. Printed on the paper of the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs, the paper standard applies to Chinese national standards (CNS) A4 size (210 X 297 mm)